: Finding which ignition coil needs replacing?

08-22-12, 06:49 PM
I want to do my own work to my STS and I'm pretty sure my problem is a bad ignition coil but with out taking it in and having someone scan, is there a way at home I can figure out myself which if any ignition coils might be bad?

08-22-12, 08:53 PM
Buy a shop manual & tools or subscribe to Alldata.